Insulation monitoring device



FIG. 1 is a front, top, and right side perspective view of an insulation monitoring device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a front view thereof in an alternate dial position;

FIG. 9 is a front view thereof in another alternate dial position; and,

FIG. 10 is a front view thereof in another alternate dial position.

The dashed broken lines in the figures show portions of the insulation monitoring device that form no part of the claimed design. The dot-dashed broken lines shown in the figures illustrate the bounds of the claim and form no part thereof. 

CLAIM The ornamental design for an insulation monitoring device, as shown and described. 